Humic substances and contaminant transport: a review
Technical Report
·
OSTI ID:5178082
Humic substances are widely distributed in the environment, occurring in soils and waters. They are the products of microbial degradation of dead vegetable and animal matter. They account for the major portion of dissolved organic matter. They are water soluble and have the ability to fix persistent hydrophobic pollutants such as PCB's, halogenated aliphatics and aromatics and heavy metal ions, rendering them water soluble. Humic substances play a very important role in the mobilization and transport of persistent pollutants. The chemical nature of humic and fulvic acids is discussed fully. The nature of humic-contaminant interaction is dealt with according to current knowledge. The implications of an understanding of these interactions to environmental problems are discussed. Profitable lines of future enquiry are delineated. A full bibliography is provided.
- Research Organization:
- Environmental Protection Agency, Cincinnati, OH (United States). Risk Reduction Engineering Lab.
- OSTI ID:
- 5178082
- Report Number(s):
- PB-92-179753/XAB; EPA--600/J-92/149
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
540320 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AROMATICS
BIODEGRADATION
CHEMICAL PROPERTIES
CHEMICAL REACTIONS
CHLORINATED ALIPHATIC HYDROCARBONS
CHLORINATED AROMATIC HYDROCARBONS
COLLOIDS
DECOMPOSITION
DISPERSIONS
DOCUMENT TYPES
ELEMENTS
ENVIRONMENTAL TRANSPORT
FULVIC ACIDS
HALOGENATED ALIPHATIC HYDROCARBONS
HALOGENATED AROMATIC HYDROCARBONS
HUMIC ACIDS
HUMUS
LAND POLLUTION
MASS TRANSFER
MATTER
METALS
ORGANIC ACIDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC MATTER
POLLUTION
REVIEWS
SOLUBILITY
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
540320 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AROMATICS
BIODEGRADATION
CHEMICAL PROPERTIES
CHEMICAL REACTIONS
CHLORINATED ALIPHATIC HYDROCARBONS
CHLORINATED AROMATIC HYDROCARBONS
COLLOIDS
DECOMPOSITION
DISPERSIONS
DOCUMENT TYPES
ELEMENTS
ENVIRONMENTAL TRANSPORT
FULVIC ACIDS
HALOGENATED ALIPHATIC HYDROCARBONS
HALOGENATED AROMATIC HYDROCARBONS
HUMIC ACIDS
HUMUS
LAND POLLUTION
MASS TRANSFER
MATTER
METALS
ORGANIC ACIDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC MATTER
POLLUTION
REVIEWS
SOLUBILITY